1 | /* |
2 | * valkyriefb.c -- frame buffer device for the PowerMac 'valkyrie' display |
3 | * |
4 | * Created 8 August 1998 by |
5 | * Martin Costabel <costabel@wanadoo.fr> and Kevin Schoedel |
6 | * |
7 | * Vmode-switching changes and vmode 15/17 modifications created 29 August |
8 | * 1998 by Barry K. Nathan <barryn@pobox.com>. |
9 | * |
10 | * Ported to m68k Macintosh by David Huggins-Daines <dhd@debian.org> |
11 | * |
12 | * Derived directly from: |
13 | * |
14 | * controlfb.c -- frame buffer device for the PowerMac 'control' display |
15 | * Copyright (C) 1998 Dan Jacobowitz <dan@debian.org> |
16 | * |
17 | * pmc-valkyrie.c -- Console support for PowerMac "valkyrie" display adaptor. |
18 | * Copyright (C) 1997 Paul Mackerras. |
19 | * |
20 | * and indirectly: |
21 | * |
22 | * Frame buffer structure from: |
23 | * drivers/video/chipsfb.c -- frame buffer device for |
24 | * Chips & Technologies 65550 chip. |
25 | * |
26 | * Copyright (C) 1998 Paul Mackerras |
27 | * |
28 | * This file is derived from the Powermac "chips" driver: |
29 | * Copyright (C) 1997 Fabio Riccardi. |
30 | * And from the frame buffer device for Open Firmware-initialized devices: |
31 | * Copyright (C) 1997 Geert Uytterhoeven. |
32 | * |
33 | * Hardware information from: |
34 | * control.c: Console support for PowerMac "control" display adaptor. |
35 | * Copyright (C) 1996 Paul Mackerras |
36 | * |
37 | * This file is subject to the terms and conditions of the GNU General Public |
38 | * License. See the file COPYING in the main directory of this archive for |
39 | * more details. |
40 | */ |
41 | |
42 | #include <linux/module.h> |
43 | #include <linux/kernel.h> |
44 | #include <linux/errno.h> |
45 | #include <linux/string.h> |
46 | #include <linux/mm.h> |
47 | #include <linux/slab.h> |
48 | #include <linux/vmalloc.h> |
49 | #include <linux/delay.h> |
50 | #include <linux/interrupt.h> |
51 | #include <linux/fb.h> |
52 | #include <linux/selection.h> |
53 | #include <linux/init.h> |
54 | #include <linux/nvram.h> |
55 | #include <linux/adb.h> |
56 | #include <linux/cuda.h> |
57 | #include <linux/of_address.h> |
58 | #ifdef CONFIG_MAC |
59 | #include <asm/macintosh.h> |
60 | #endif |
61 | |
62 | #include "macmodes.h" |
63 | #include "valkyriefb.h" |
64 | |
65 | static int default_vmode = VMODE_NVRAM; |
66 | static int default_cmode = CMODE_NVRAM; |
67 | |
68 | struct fb_par_valkyrie { |
69 | int vmode, cmode; |
70 | int xres, yres; |
71 | int vxres, vyres; |
72 | struct valkyrie_regvals *init; |
73 | }; |
74 | |
75 | struct fb_info_valkyrie { |
76 | struct fb_info info; |
77 | struct fb_par_valkyrie par; |
78 | struct cmap_regs __iomem *cmap_regs; |
79 | unsigned long cmap_regs_phys; |
80 | |
81 | struct valkyrie_regs __iomem *valkyrie_regs; |
82 | unsigned long valkyrie_regs_phys; |
83 | |
84 | __u8 __iomem *frame_buffer; |
85 | unsigned long frame_buffer_phys; |
86 | |
87 | int sense; |
88 | unsigned long total_vram; |
89 | |
90 | u32 pseudo_palette[16]; |
91 | }; |
92 | |
93 | static int valkyriefb_setup(char*); |
94 | |
95 | static int valkyriefb_check_var(struct fb_var_screeninfo *var, |
96 | struct fb_info *info); |
97 | static int valkyriefb_set_par(struct fb_info *info); |
98 | static int valkyriefb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, |
99 | u_int transp, struct fb_info *info); |
100 | static int valkyriefb_blank(int blank_mode, struct fb_info *info); |
101 | |
102 | static int read_valkyrie_sense(struct fb_info_valkyrie *p); |
103 | static void set_valkyrie_clock(unsigned char *params); |
104 | static int valkyrie_var_to_par(struct fb_var_screeninfo *var, |
105 | struct fb_par_valkyrie *par, const struct fb_info *fb_info); |
106 | |
107 | static int valkyrie_init_info(struct fb_info *info, struct fb_info_valkyrie *p); |
108 | static void valkyrie_par_to_fix(struct fb_par_valkyrie *par, struct fb_fix_screeninfo *fix); |
109 | static void valkyrie_init_fix(struct fb_fix_screeninfo *fix, struct fb_info_valkyrie *p); |
110 | |
111 | static const struct fb_ops valkyriefb_ops = { |
112 | .owner = THIS_MODULE, |
113 | FB_DEFAULT_IOMEM_OPS, |
114 | .fb_check_var = valkyriefb_check_var, |
115 | .fb_set_par = valkyriefb_set_par, |
116 | .fb_setcolreg = valkyriefb_setcolreg, |
117 | .fb_blank = valkyriefb_blank, |
118 | }; |
119 | |
120 | /* Sets the video mode according to info->var */ |
121 | static int valkyriefb_set_par(struct fb_info *info) |
122 | { |
123 | struct fb_info_valkyrie *p = |
124 | container_of(info, struct fb_info_valkyrie, info); |
125 | volatile struct valkyrie_regs __iomem *valkyrie_regs = p->valkyrie_regs; |
126 | struct fb_par_valkyrie *par = info->par; |
127 | struct valkyrie_regvals *init; |
128 | int err; |
129 | |
130 | if ((err = valkyrie_var_to_par(var: &info->var, par, fb_info: info))) |
131 | return err; |
132 | |
133 | valkyrie_par_to_fix(par, fix: &info->fix); |
134 | |
135 | /* Reset the valkyrie */ |
136 | out_8(&valkyrie_regs->status.r, 0); |
137 | udelay(100); |
138 | |
139 | /* Initialize display timing registers */ |
140 | init = par->init; |
141 | out_8(&valkyrie_regs->mode.r, init->mode | 0x80); |
142 | out_8(&valkyrie_regs->depth.r, par->cmode + 3); |
143 | set_valkyrie_clock(init->clock_params); |
144 | udelay(100); |
145 | |
146 | /* Turn on display */ |
147 | out_8(&valkyrie_regs->mode.r, init->mode); |
148 | |
149 | return 0; |
150 | } |
151 | |
152 | static inline int valkyrie_par_to_var(struct fb_par_valkyrie *par, |
153 | struct fb_var_screeninfo *var) |
154 | { |
155 | return mac_vmode_to_var(vmode: par->vmode, cmode: par->cmode, var); |
156 | } |
157 | |
158 | static int |
159 | valkyriefb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) |
160 | { |
161 | int err; |
162 | struct fb_par_valkyrie par; |
163 | |
164 | if ((err = valkyrie_var_to_par(var, par: &par, fb_info: info))) |
165 | return err; |
166 | valkyrie_par_to_var(par: &par, var); |
167 | return 0; |
168 | } |
169 | |
170 | /* |
171 | * Blank the screen if blank_mode != 0, else unblank. If blank_mode == NULL |
172 | * then the caller blanks by setting the CLUT (Color Look Up Table) to all |
173 | * black. Return 0 if blanking succeeded, != 0 if un-/blanking failed due |
174 | * to e.g. a video mode which doesn't support it. Implements VESA suspend |
175 | * and powerdown modes on hardware that supports disabling hsync/vsync: |
176 | * blank_mode == 2: suspend vsync |
177 | * blank_mode == 3: suspend hsync |
178 | * blank_mode == 4: powerdown |
179 | */ |
180 | static int valkyriefb_blank(int blank_mode, struct fb_info *info) |
181 | { |
182 | struct fb_info_valkyrie *p = |
183 | container_of(info, struct fb_info_valkyrie, info); |
184 | struct fb_par_valkyrie *par = info->par; |
185 | struct valkyrie_regvals *init = par->init; |
186 | |
187 | if (init == NULL) |
188 | return 1; |
189 | |
190 | switch (blank_mode) { |
191 | case FB_BLANK_UNBLANK: /* unblank */ |
192 | out_8(&p->valkyrie_regs->mode.r, init->mode); |
193 | break; |
194 | case FB_BLANK_NORMAL: |
195 | return 1; /* get caller to set CLUT to all black */ |
196 | case FB_BLANK_VSYNC_SUSPEND: |
197 | case FB_BLANK_HSYNC_SUSPEND: |
198 | /* |
199 | * [kps] Value extracted from MacOS. I don't know |
200 | * whether this bit disables hsync or vsync, or |
201 | * whether the hardware can do the other as well. |
202 | */ |
203 | out_8(&p->valkyrie_regs->mode.r, init->mode | 0x40); |
204 | break; |
205 | case FB_BLANK_POWERDOWN: |
206 | out_8(&p->valkyrie_regs->mode.r, 0x66); |
207 | break; |
208 | } |
209 | return 0; |
210 | } |
211 | |
212 | static int valkyriefb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, |
213 | u_int transp, struct fb_info *info) |
214 | { |
215 | struct fb_info_valkyrie *p = |
216 | container_of(info, struct fb_info_valkyrie, info); |
217 | volatile struct cmap_regs __iomem *cmap_regs = p->cmap_regs; |
218 | struct fb_par_valkyrie *par = info->par; |
219 | |
220 | if (regno > 255) |
221 | return 1; |
222 | red >>= 8; |
223 | green >>= 8; |
224 | blue >>= 8; |
225 | |
226 | /* tell clut which address to fill */ |
227 | out_8(&p->cmap_regs->addr, regno); |
228 | udelay(1); |
229 | /* send one color channel at a time */ |
230 | out_8(&cmap_regs->lut, red); |
231 | out_8(&cmap_regs->lut, green); |
232 | out_8(&cmap_regs->lut, blue); |
233 | |
234 | if (regno < 16 && par->cmode == CMODE_16) |
235 | ((u32 *)info->pseudo_palette)[regno] = |
236 | (regno << 10) | (regno << 5) | regno; |
237 | |
238 | return 0; |
239 | } |
240 | |
241 | static inline int valkyrie_vram_reqd(int video_mode, int color_mode) |
242 | { |
243 | int pitch; |
244 | struct valkyrie_regvals *init = valkyrie_reg_init[video_mode-1]; |
245 | |
246 | if ((pitch = init->pitch[color_mode]) == 0) |
247 | pitch = 2 * init->pitch[0]; |
248 | return init->vres * pitch; |
249 | } |
250 | |
251 | static void set_valkyrie_clock(unsigned char *params) |
252 | { |
253 | #ifdef CONFIG_ADB_CUDA |
254 | struct adb_request req; |
255 | int i; |
256 | |
257 | for (i = 0; i < 3; ++i) { |
258 | cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_GET_SET_IIC, |
259 | 0x50, i + 1, params[i]); |
260 | while (!req.complete) |
261 | cuda_poll(); |
262 | } |
263 | #endif |
264 | } |
265 | |
266 | static void __init valkyrie_choose_mode(struct fb_info_valkyrie *p) |
267 | { |
268 | p->sense = read_valkyrie_sense(p); |
269 | printk(KERN_INFO "Monitor sense value = 0x%x\n" , p->sense); |
270 | |
271 | /* Try to pick a video mode out of NVRAM if we have one. */ |
272 | #ifdef CONFIG_PPC_PMAC |
273 | if (IS_REACHABLE(CONFIG_NVRAM) && default_vmode == VMODE_NVRAM) |
274 | default_vmode = nvram_read_byte(NV_VMODE); |
275 | #endif |
276 | if (default_vmode <= 0 || default_vmode > VMODE_MAX || |
277 | !valkyrie_reg_init[default_vmode - 1]) { |
278 | default_vmode = mac_map_monitor_sense(sense: p->sense); |
279 | if (!valkyrie_reg_init[default_vmode - 1]) |
280 | default_vmode = VMODE_640_480_67; |
281 | } |
282 | |
283 | #ifdef CONFIG_PPC_PMAC |
284 | if (IS_REACHABLE(CONFIG_NVRAM) && default_cmode == CMODE_NVRAM) |
285 | default_cmode = nvram_read_byte(NV_CMODE); |
286 | #endif |
287 | /* |
288 | * Reduce the pixel size if we don't have enough VRAM or bandwidth. |
289 | */ |
290 | if (default_cmode < CMODE_8 || default_cmode > CMODE_16 |
291 | || valkyrie_reg_init[default_vmode-1]->pitch[default_cmode] == 0 |
292 | || valkyrie_vram_reqd(video_mode: default_vmode, color_mode: default_cmode) > p->total_vram) |
293 | default_cmode = CMODE_8; |
294 | |
295 | printk(KERN_INFO "using video mode %d and color mode %d.\n" , |
296 | default_vmode, default_cmode); |
297 | } |
298 | |
299 | static int __init valkyriefb_init(void) |
300 | { |
301 | struct fb_info_valkyrie *p; |
302 | unsigned long frame_buffer_phys, cmap_regs_phys; |
303 | int err; |
304 | char *option = NULL; |
305 | |
306 | if (fb_get_options(name: "valkyriefb" , option: &option)) |
307 | return -ENODEV; |
308 | valkyriefb_setup(option); |
309 | |
310 | #ifdef CONFIG_MAC |
311 | if (!MACH_IS_MAC) |
312 | return -ENODEV; |
313 | if (!(mac_bi_data.id == MAC_MODEL_Q630 |
314 | /* I'm not sure about this one */ |
315 | || mac_bi_data.id == MAC_MODEL_P588)) |
316 | return -ENODEV; |
317 | |
318 | /* Hardcoded addresses... welcome to 68k Macintosh country :-) */ |
319 | frame_buffer_phys = 0xf9000000; |
320 | cmap_regs_phys = 0x50f24000; |
321 | #else /* ppc (!CONFIG_MAC) */ |
322 | { |
323 | struct device_node *dp; |
324 | struct resource r; |
325 | |
326 | dp = of_find_node_by_name(NULL, name: "valkyrie" ); |
327 | if (!dp) |
328 | return 0; |
329 | |
330 | if (of_address_to_resource(dev: dp, index: 0, r: &r)) { |
331 | printk(KERN_ERR "can't find address for valkyrie\n" ); |
332 | return 0; |
333 | } |
334 | |
335 | frame_buffer_phys = r.start; |
336 | cmap_regs_phys = r.start + 0x304000; |
337 | } |
338 | #endif /* ppc (!CONFIG_MAC) */ |
339 | |
340 | p = kzalloc(size: sizeof(*p), GFP_ATOMIC); |
341 | if (!p) |
342 | return -ENOMEM; |
343 | |
344 | /* Map in frame buffer and registers */ |
345 | if (!request_mem_region(frame_buffer_phys, 0x100000, "valkyriefb" )) { |
346 | kfree(objp: p); |
347 | return 0; |
348 | } |
349 | p->total_vram = 0x100000; |
350 | p->frame_buffer_phys = frame_buffer_phys; |
351 | #ifdef CONFIG_MAC |
352 | p->frame_buffer = ioremap(frame_buffer_phys, p->total_vram); |
353 | #else |
354 | p->frame_buffer = ioremap_wt(offset: frame_buffer_phys, size: p->total_vram); |
355 | #endif |
356 | p->cmap_regs_phys = cmap_regs_phys; |
357 | p->cmap_regs = ioremap(offset: p->cmap_regs_phys, size: 0x1000); |
358 | p->valkyrie_regs_phys = cmap_regs_phys+0x6000; |
359 | p->valkyrie_regs = ioremap(offset: p->valkyrie_regs_phys, size: 0x1000); |
360 | err = -ENOMEM; |
361 | if (p->frame_buffer == NULL || p->cmap_regs == NULL |
362 | || p->valkyrie_regs == NULL) { |
363 | printk(KERN_ERR "valkyriefb: couldn't map resources\n" ); |
364 | goto out_free; |
365 | } |
366 | |
367 | valkyrie_choose_mode(p); |
368 | mac_vmode_to_var(vmode: default_vmode, cmode: default_cmode, var: &p->info.var); |
369 | err = valkyrie_init_info(info: &p->info, p); |
370 | if (err < 0) |
371 | goto out_free; |
372 | valkyrie_init_fix(fix: &p->info.fix, p); |
373 | if (valkyriefb_set_par(info: &p->info)) |
374 | /* "can't happen" */ |
375 | printk(KERN_ERR "valkyriefb: can't set default video mode\n" ); |
376 | |
377 | if ((err = register_framebuffer(fb_info: &p->info)) != 0) |
378 | goto out_cmap_free; |
379 | |
380 | fb_info(&p->info, "valkyrie frame buffer device\n" ); |
381 | return 0; |
382 | |
383 | out_cmap_free: |
384 | fb_dealloc_cmap(cmap: &p->info.cmap); |
385 | out_free: |
386 | if (p->frame_buffer) |
387 | iounmap(addr: p->frame_buffer); |
388 | if (p->cmap_regs) |
389 | iounmap(addr: p->cmap_regs); |
390 | if (p->valkyrie_regs) |
391 | iounmap(addr: p->valkyrie_regs); |
392 | kfree(objp: p); |
393 | return err; |
394 | } |
395 | |
396 | /* |
397 | * Get the monitor sense value. |
398 | */ |
399 | static int read_valkyrie_sense(struct fb_info_valkyrie *p) |
400 | { |
401 | int sense, in; |
402 | |
403 | out_8(&p->valkyrie_regs->msense.r, 0); /* release all lines */ |
404 | __delay(loops: 20000); |
405 | sense = ((in = in_8(&p->valkyrie_regs->msense.r)) & 0x70) << 4; |
406 | /* drive each sense line low in turn and collect the other 2 */ |
407 | out_8(&p->valkyrie_regs->msense.r, 4); /* drive A low */ |
408 | __delay(loops: 20000); |
409 | sense |= ((in = in_8(&p->valkyrie_regs->msense.r)) & 0x30); |
410 | out_8(&p->valkyrie_regs->msense.r, 2); /* drive B low */ |
411 | __delay(loops: 20000); |
412 | sense |= ((in = in_8(&p->valkyrie_regs->msense.r)) & 0x40) >> 3; |
413 | sense |= (in & 0x10) >> 2; |
414 | out_8(&p->valkyrie_regs->msense.r, 1); /* drive C low */ |
415 | __delay(loops: 20000); |
416 | sense |= ((in = in_8(&p->valkyrie_regs->msense.r)) & 0x60) >> 5; |
417 | |
418 | out_8(&p->valkyrie_regs->msense.r, 7); |
419 | |
420 | return sense; |
421 | } |
422 | |
423 | /* |
424 | * This routine takes a user-supplied var, |
425 | * and picks the best vmode/cmode from it. |
426 | */ |
427 | |
428 | /* [bkn] I did a major overhaul of this function. |
429 | * |
430 | * Much of the old code was "swiped by jonh from atyfb.c". Because |
431 | * macmodes has mac_var_to_vmode, I felt that it would be better to |
432 | * rework this function to use that, instead of reinventing the wheel to |
433 | * add support for vmode 17. This was reinforced by the fact that |
434 | * the previously swiped atyfb.c code is no longer there. |
435 | * |
436 | * So, I swiped and adapted platinum_var_to_par (from platinumfb.c), replacing |
437 | * most, but not all, of the old code in the process. One side benefit of |
438 | * swiping the platinumfb code is that we now have more comprehensible error |
439 | * messages when a vmode/cmode switch fails. (Most of the error messages are |
440 | * platinumfb.c, but I added two of my own, and I also changed some commas |
441 | * into colons to make the messages more consistent with other Linux error |
442 | * messages.) In addition, I think the new code *might* fix some vmode- |
443 | * switching oddities, but I'm not sure. |
444 | * |
445 | * There may be some more opportunities for cleanup in here, but this is a |
446 | * good start... |
447 | */ |
448 | |
449 | static int valkyrie_var_to_par(struct fb_var_screeninfo *var, |
450 | struct fb_par_valkyrie *par, const struct fb_info *fb_info) |
451 | { |
452 | int vmode, cmode; |
453 | struct valkyrie_regvals *init; |
454 | struct fb_info_valkyrie *p = |
455 | container_of(fb_info, struct fb_info_valkyrie, info); |
456 | |
457 | if (mac_var_to_vmode(var, vmode: &vmode, cmode: &cmode) != 0) { |
458 | printk(KERN_ERR "valkyriefb: can't do %dx%dx%d.\n" , |
459 | var->xres, var->yres, var->bits_per_pixel); |
460 | return -EINVAL; |
461 | } |
462 | |
463 | /* Check if we know about the wanted video mode */ |
464 | if (vmode < 1 || vmode > VMODE_MAX || !valkyrie_reg_init[vmode-1]) { |
465 | printk(KERN_ERR "valkyriefb: vmode %d not valid.\n" , vmode); |
466 | return -EINVAL; |
467 | } |
468 | |
469 | if (cmode != CMODE_8 && cmode != CMODE_16) { |
470 | printk(KERN_ERR "valkyriefb: cmode %d not valid.\n" , cmode); |
471 | return -EINVAL; |
472 | } |
473 | |
474 | if (var->xres_virtual > var->xres || var->yres_virtual > var->yres |
475 | || var->xoffset != 0 || var->yoffset != 0) { |
476 | return -EINVAL; |
477 | } |
478 | |
479 | init = valkyrie_reg_init[vmode-1]; |
480 | if (init->pitch[cmode] == 0) { |
481 | printk(KERN_ERR "valkyriefb: vmode %d does not support " |
482 | "cmode %d.\n" , vmode, cmode); |
483 | return -EINVAL; |
484 | } |
485 | |
486 | if (valkyrie_vram_reqd(video_mode: vmode, color_mode: cmode) > p->total_vram) { |
487 | printk(KERN_ERR "valkyriefb: not enough ram for vmode %d, " |
488 | "cmode %d.\n" , vmode, cmode); |
489 | return -EINVAL; |
490 | } |
491 | |
492 | par->vmode = vmode; |
493 | par->cmode = cmode; |
494 | par->init = init; |
495 | par->xres = var->xres; |
496 | par->yres = var->yres; |
497 | par->vxres = par->xres; |
498 | par->vyres = par->yres; |
499 | |
500 | return 0; |
501 | } |
502 | |
503 | static void valkyrie_init_fix(struct fb_fix_screeninfo *fix, struct fb_info_valkyrie *p) |
504 | { |
505 | memset(fix, 0, sizeof(*fix)); |
506 | strcpy(p: fix->id, q: "valkyrie" ); |
507 | fix->mmio_start = p->valkyrie_regs_phys; |
508 | fix->mmio_len = sizeof(struct valkyrie_regs); |
509 | fix->type = FB_TYPE_PACKED_PIXELS; |
510 | fix->smem_start = p->frame_buffer_phys + 0x1000; |
511 | fix->smem_len = p->total_vram; |
512 | |
513 | fix->type_aux = 0; |
514 | fix->ywrapstep = 0; |
515 | fix->ypanstep = 0; |
516 | fix->xpanstep = 0; |
517 | |
518 | } |
519 | |
520 | /* Fix must already be inited above */ |
521 | static void valkyrie_par_to_fix(struct fb_par_valkyrie *par, |
522 | struct fb_fix_screeninfo *fix) |
523 | { |
524 | fix->smem_len = valkyrie_vram_reqd(video_mode: par->vmode, color_mode: par->cmode); |
525 | fix->visual = (par->cmode == CMODE_8) ? |
526 | FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR; |
527 | fix->line_length = par->vxres << par->cmode; |
528 | /* ywrapstep, xpanstep, ypanstep */ |
529 | } |
530 | |
531 | static int __init valkyrie_init_info(struct fb_info *info, |
532 | struct fb_info_valkyrie *p) |
533 | { |
534 | info->fbops = &valkyriefb_ops; |
535 | info->screen_base = p->frame_buffer + 0x1000; |
536 | info->pseudo_palette = p->pseudo_palette; |
537 | info->par = &p->par; |
538 | return fb_alloc_cmap(cmap: &info->cmap, len: 256, transp: 0); |
539 | } |
540 | |
541 | |
542 | /* |
543 | * Parse user specified options (`video=valkyriefb:') |
544 | */ |
545 | static int __init valkyriefb_setup(char *options) |
546 | { |
547 | char *this_opt; |
548 | |
549 | if (!options || !*options) |
550 | return 0; |
551 | |
552 | while ((this_opt = strsep(&options, "," )) != NULL) { |
553 | if (!strncmp(this_opt, "vmode:" , 6)) { |
554 | int vmode = simple_strtoul(this_opt+6, NULL, 0); |
555 | if (vmode > 0 && vmode <= VMODE_MAX) |
556 | default_vmode = vmode; |
557 | } |
558 | else if (!strncmp(this_opt, "cmode:" , 6)) { |
559 | int depth = simple_strtoul(this_opt+6, NULL, 0); |
560 | switch (depth) { |
561 | case 8: |
562 | default_cmode = CMODE_8; |
563 | break; |
564 | case 15: |
565 | case 16: |
566 | default_cmode = CMODE_16; |
567 | break; |
568 | } |
569 | } |
570 | } |
571 | return 0; |
572 | } |
573 | |
574 | module_init(valkyriefb_init); |
575 | MODULE_LICENSE("GPL" ); |
576 | |